Liquid-circulating apparatus for engines.



No. 802,404. PATENTED 001:. 24, 1905.

J. 1-, MoGANNA.

LIQUID GIRCULATING APPARATUS FOR ENGINES.

APPLICATION FILED DBO- 29, 1904.

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LlQUllD-ClPCULATlNGi APPARATUS FOR ENGINES.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed December 29, 1904. Serial No. 238,764:-

To rtZZ 1071 0111, 11b natty concern:

Be it known that I, JOHN F. MoOANNA, a citizen of the United States, residing at Ohicago, in the county of (look and State of Illinois, have invented certain new and useful Improvements in Liquid Circulating Apparatus for Engines, of which the following is a specilication, reference being bad therein to the accompanying drawings.

My invention is in the nature of a pump designed to be operated by fluid -pressure, and I have shown it as operated by pressure from the cylinder of an explosion-engine and serving to circulate water from the coolingtank through the water-jacket of the cylinder and incidentally to serve as an indicator of its operation and a means of readily ascertaining the temperature of the circulating fluid.

To illustrate my invention, I annex hereto a sheet of drawings, in which the same reference characters are used to designate identical parts in all the ligures, of which- Figure l is a sectional view through the front end of an automobile, showing my invention applied thereto. Fig. 2 is a sectional view through the check-valves, and Fig. 3 is a sectional view through the operating apparatus.

The jacket a of the cylinder is connected by the pipes b and with the cooling-tank (Z in the customary manner. In the lower pipe 0 I place a pair of check-valves and f on either side of a short pipe g, leading to the operating apparatus, which I will designate as a whole by the character A and which'is connected to the explosion end of the cylinder by the pipe t, which contains the cock j, by which the apparatus can be shut off when desired. The valve-easing and pipe connection is conveniently formed by a section it, having the valve-seats Z and m, with which the ballvalves operate in the customary manner. The body of the apparatus 71. is a cylindrical shell having one or more sides partially open, as shown, to expose the glass tube or, having a fluid-tight seat therein. The upper end is closed by a head 0, having the tubular extension 12, whose upper end is connected to the pipe in any desired manner. The head 0 is secured in place and the glass tightly clamped between the packing rings to make fluidtight joints by the nut q cooperating with the threaded upper end of the body /a and engaging the upper edge of the head. A float r, Whose cross-section substantially fills the tube '12.. has the rod s extending upward and carrying the oprmsitely-faced valves and a, adapted to cooperate with the valve-seats o and 10, formed in the head 0 and constituting the ends of thesmall passage through which the upper end of the rod s passes.

The operation of the :wparatus is as follows: The apparatus may be assumed to be in the position shown in'Fig. 3, with the cylinder piston starting up to compress the charge preparatory to ignition. As the pressure becomes sullicient the water standing in the tube a is forced down, and the float '2' goes with it until the valve it rests upon the seat 10, when of course the pressure on the water ceases, and that is before the high pressure in the cylinder can cause a greater movement of the water than is desired. Of course, as the water descends under the pressure prior to the closing of the valve a the valve f is held closed and valve 0 is raise l, so the water is forced into the jacket (0. hen the pressure in the cylinder is released to less than that of the head of water in the tank, the float is raised until the valve t engages the seat w, thus limiting the amount of water that can pass through the raised valve f. By thus drawing the water into the a 'iparatus from the coolingtank and forcing it out into the water-jacket the desired circulation is obtained. Incidentally the movement of the float 0', which is of course visible, inasmuch as the apparatus 72. is on the dashboard ;1 serves as an indication of the operation of the engine, and by feeling the glass a the heat of the circulating water can be readily and in stantly ascertained, two features of value to the user.

\Vhile I have shown and described my invention as applied to an explosion-engine for circulating cooling-water through the jacket, it will be readily seen that it is capable of other uses, and also that while I have shown it as embodied in the form which I at present consider best adapted to carry out its purposes it is capable of modifications, and that conse quently in the interpretation of the following claims I do not desire to be limited except as may be necessitated by the prior art.

W hat I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a device of the class described, the combination with the chamber adapted to be connected with a source of intermittent fluidpressure, of a liquid-supply also connected therewith, check-valves for said liquid, and

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means for applying the pressure to the liquid in the chamber up to a certain degree and then shutting it off from said chamber while it remains above said degree.

2. In adevice of the class described, the combinat-ion with the source of intermittent fluidpressure, of the liquid-reservoir, pumping mechanism operated by thefluid-pressure cooperating with said liquid reservoir, and means for operating said pumping mechanism under a certain pressure and shutting it off when it rises above said certain pressure.

3. In a device of the class described, the combination with the source-of intermittent fluid pressure, of the liquid-reservoir, pumping mechanism operated by the fluid-pressure cooperating with said liquid reservoir, and means for operating said pumping mechanism under a certain pressure and shutting it off when it rises above said certain pressure, said means consisting of a passage between the pumping mechanism and the source of intermittent fluid-pressure having valve-seats at its ends, a float in the liquid-reservoir having an extension through said passage and provided with valves to cooperate with said seats, all combined and cooperating substantially as and for the purpose described.

4. In a device of the class described, thecombination with a chamber adapted to be connected with a source of intermittent fluidpressure, of connectionstherewith to a liquidsupply, check-valves in said connection for the purpose described, a passage in said chamber for the fluid under pressure, valve-seats at the ends of said passage, and a float in said chamber having. an extension through said passage and provided with valves to cooper ate with said seats; all combined and cooper ating substantially as and for the purpose described.

5. In a device of the class described, the combination with the transparent chamber adapted to be connected with a source of intermittent fluid-pressure, of a liquid-supply alsc connected therewith, check-valves for said liquid, a float in said chamber, and means fol applying the pressure to the float and liquid in the chamber up to a certain degree and ther shutting it ofi" therefrom while it remains above said degree.

6. In adevice of the class described, the combination with the gas-engine, of the waterjacket surrounding the cylinder. the coolingtank, double connections between the waterjacket and the cooling-tanl,achamber connected with the engine-cylinder, a pair of checkvalves in one of the connections bet-ween the cooling-tank and the water-jacket, a pipe connecting the chamber with the last-mentioned connection between the check-valves, a passage in said chamber, valve-seats at its ends, and a float in said chamber having an extension through said passage and provided with valves to cooperate with said seats; all combined and cooperating substantially as and for the purpose described.

In testimony whereof I afliX my signature in presence of two witnesses.

JOHN F. MOGANNA.

Witnesses:

ARTHUR B. SEIBOLD, ELIZABETH Monroe. 

